scholarly journals In a warmer Arctic, mosquitoes avoid increased mortality from predators by growing faster

2015 ◽  
Vol 282 (1815) ◽  
pp. 20151549 ◽  
Author(s):  
Lauren E. Culler ◽  
Matthew P. Ayres ◽  
Ross A. Virginia
Keyword(s):  
Climate Change ◽  
Species Interactions ◽  
Adult Stage ◽  
Climate Change Impacts ◽  
The Arctic ◽  
Demographic Model ◽  
Negative Consequences ◽  
Daily Mortality ◽  
Natural Systems ◽  
Faster Development

Climate change is altering environmental temperature, a factor that influences ectothermic organisms by controlling rates of physiological processes. Demographic effects of warming, however, are determined by the expression of these physiological effects through predator–prey and other species interactions. Using field observations and controlled experiments, we measured how increasing temperatures in the Arctic affected development rates and mortality rates (from predation) of immature Arctic mosquitoes in western Greenland. We then developed and parametrized a demographic model to evaluate how temperature affects survival of mosquitoes from the immature to the adult stage. Our studies showed that warming increased development rate of immature mosquitoes ( Q 10 = 2.8) but also increased daily mortality from increased predation rates by a dytiscid beetle ( Q 10 = 1.2–1.5). Despite increased daily mortality, the model indicated that faster development and fewer days exposed to predators resulted in an increased probability of mosquito survival to the adult stage. Warming also advanced mosquito phenology, bringing mosquitoes into phenological synchrony with caribou. Increases in biting pests will have negative consequences for caribou and their role as a subsistence resource for local communities. Generalizable frameworks that account for multiple effects of temperature are needed to understand how climate change impacts coupled human–natural systems.

Towards Climate Change Mitigation and Adaptation

2021 ◽  
Vol 20 (1) ◽  
pp. 138-158
Author(s):  
Umer Khayyam ◽  
Rida Bano ◽  
Shahzad Alvi
Keyword(s):  
Climate Change ◽  
Global Climate ◽  
Capital City ◽  
Mitigation Measures ◽  
Negative Consequences ◽  
Adaptation Measures ◽  
Natural Systems ◽  
Mitigation And Adaptation ◽  
Level Of Motivation ◽  
The University

Abstract Global climate change is one of the main threats facing humanity and the impacts on natural systems as well as humans are expected to be severe. People can take action against these threats through two approaches: mitigation and adaptation. However, mitigations and adaptations are contingent on the level of motivation and awareness, as well as socio-economic and environmental conditions. This study examined personal perception and motivation to mitigate and adapt to climate change among the university students in the capital city of Pakistan. We divided the respondents into social sciences, applied sciences and natural sciences, using logistic regression analysis. The results indicated that students who perceive severity, benefits from preparation, and have more information about climate change were 1.57, 4.98 and 1.63 times more likely to take mitigation and 1.47, 1.14 and 1.17 times more likely to take adaptation measures, respectively. Students who perceived self-efficacy, obstacles to protect from the negative consequences of climate change and who belonged to affluent families were more likely to take mitigation measures and less likely to take adaptation strategies. However, mitigation and adaptation were unaffected by age, gender and study discipline.

scholarly journals Climate Change, Mining and Traditional Indigenous Knowledge in Australia

2016 ◽  
Vol 4 (1) ◽  
pp. 92-101 ◽  
Author(s):  
Tony Birch
Keyword(s):  
Climate Change ◽  
Climate Change Impacts ◽  
Indigenous Communities ◽  
Negative Consequences ◽  
Sea Levels ◽  
Depth Of Knowledge ◽  
The North ◽  
Weather Events ◽  
Rising Sea Levels ◽  
Indigenous Society

Australia, in common with nations globally, faces an immediate and future environmental and economic challenge as an outcome of climate change. Indigenous communities in Australia, some who live a precarious economic and social existence, are particularly vulnerable to climate change. Impacts are already being experienced through dramatic weather events such as floods and bushfires. Other, more gradual changes, such as rising sea levels in the north of Australia, will have long-term negative consequences on communities, including the possibility of forced relocation. Climate change is also a historical phenomenon, and Indigenous communities hold a depth of knowledge of climate change and its impact on local ecologies of benefit to the wider community when policies to deal with an increasingly warmer world are considered. Non-Indigenous society must respect this knowledge and facilitate alliances with Indigenous communities based on a greater recognition of traditional knowledge systems.

scholarly journals Values and motivations in tourist perceptions of last-chance tourism

2015 ◽  
Vol 18 (1) ◽  
pp. 3-14 ◽  
Author(s):  
Ann Hindley ◽  
Xavier Font
Keyword(s):  
Climate Change ◽  
Climate Change Impacts ◽  
Photo Elicitation ◽  
The Arctic ◽  
Construction Technique ◽  
Projective Techniques ◽  
Personal Variables ◽  
The Social ◽  
Self Interest ◽  
Nuanced Understanding

Tourists' perceptions of climate change affect decisions and choices to visit destinations, which are disappearing because of climate change impacts. Values and motivations are two of the personal variables underpinning tourists' decisions. The study addresses both the limited values research in tourism and reveals unconscious motives by using projective techniques. Projective techniques avoid some of the social desirability bias present in much ethical research. Choice ordering technique and the list of values assist by assigning importance, with narrative responses providing meaning. The construction technique builds a story from a stimulus, with photo-elicitation using participants' personal holiday photographs. A sample of pre, during and post visit tourists to the Arctic and Venice were interviewed. Results, which provide a more nuanced understanding of how the personal variables of values and motivations are underpinned by self-interest, inform policies and the messages designed to influence pro-sustainability behaviour.

scholarly journals The impact of global warming on seasonality of ocean primary production

2013 ◽  
Vol 10 (1) ◽  
pp. 1421-1450 ◽  
Author(s):  
S. Henson ◽  
H. Cole ◽  
C. Beaulieu ◽  
A. Yool
Keyword(s):  
Climate Change ◽  
Primary Production ◽  
Nitrate Concentration ◽  
Mixed Layer Depth ◽  
Climate Change Impacts ◽  
The Arctic ◽  
Layer Depth ◽  
Biogeochemical Models ◽  
Ocean Productivity ◽  
The Impact

Abstract. The seasonal cycle (i.e. phenology) of oceanic primary production (PP) is expected to change in response to climate warming. Here, we use output from 6 global biogeochemical models to examine the response in the seasonal amplitude of PP and timing of peak PP to the IPCC AR5 warming scenario. We also investigate whether trends in PP phenology may be more rapidly detectable than trends in PP itself. The seasonal amplitude of PP decreases by an average of 1–2% per year by 2100 in most biomes, with the exception of the Arctic which sees an increase of ~1% per year. This is accompanied by an advance in the timing of peak PP by ~0.5–1 months by 2100 over much of the globe, and particularly pronounced in the Arctic. These changes are driven by an increase in seasonal amplitude of sea surface temperature (where the maxima get hotter faster than the minima) and a decrease in the seasonal amplitude of the mixed layer depth and surface nitrate concentration. Our results indicate a transformation of currently strongly seasonal (bloom forming) regions, typically found at high latitudes, into weakly seasonal (non-bloom) regions, characteristic of contemporary subtropical conditions. On average, 36 yr of data are needed to detect a climate change-driven trend in the seasonal amplitude of PP, compared to 32 yr for mean annual PP. We conclude that analysis of phytoplankton phenology is not necessarily a shortcut to detecting climate change impacts on ocean productivity.

scholarly journals Planning for climate change impacts on hydropower in the Far North

2017 ◽  
Vol 21 (1) ◽  
pp. 133-151 ◽  
Author(s):  
Jessica E. Cherry ◽  
Corrie Knapp ◽  
Sarah Trainor ◽  
Andrea J. Ray ◽  
Molly Tedesche ◽  
...  
Keyword(s):  
Climate Change ◽  
Water Resource Management ◽  
Climate Models ◽  
Climate Change Impacts ◽  
The Arctic ◽  
Far North ◽  
Glacier Recession ◽  
Hydrologic Impacts ◽  
Hydrologic Responses ◽  
Available Information

Abstract. Unlike much of the contiguous United States, new hydropower development continues in the Far North, where climate models project precipitation will likely increase over the next century. Regional complexities in the Arctic and sub-Arctic, such as glacier recession and permafrost thaw, however, introduce uncertainties about the hydrologic responses to climate change that impact water resource management. This work reviews hydroclimate changes in the Far North and their impacts on hydropower; it provides a template for application of current techniques for prediction and estimating uncertainty, and it describes best practices for integrating science into management and decision-making. The growing number of studies on hydrologic impacts suggests that information resulting from climate change science has matured enough that it can and should be integrated into hydropower scoping, design, and management. Continuing to ignore the best available information in lieu of status quo planning is likely to prove costly to society in the long term.

scholarly journals The role of interactions in a world implementing adaptation and mitigation solutions to climate change

2011 ◽  
Vol 369 (1934) ◽  
pp. 217-241 ◽  
Author(s):  
Rachel Warren
Keyword(s):  
Climate Change ◽  
Ecosystem Services ◽  
Agricultural Land ◽  
Carbon Sink ◽  
Climate Change Impacts ◽  
Natural Systems ◽  
Global Mean Temperature ◽  
Mitigation And Adaptation ◽  
Single Region ◽  
Integrated Assessments

The papers in this volume discuss projections of climate change impacts upon humans and ecosystems under a global mean temperature rise of 4°C above preindustrial levels. Like most studies, they are mainly single-sector or single-region-based assessments. Even the multi-sector or multi-region approaches generally consider impacts in sectors and regions independently, ignoring interactions. Extreme weather and adaptation processes are often poorly represented and losses of ecosystem services induced by climate change or human adaptation are generally omitted. This paper addresses this gap by reviewing some potential interactions in a 4°C world, and also makes a comparison with a 2°C world. In a 4°C world, major shifts in agricultural land use and increased drought are projected, and an increased human population might increasingly be concentrated in areas remaining wet enough for economic prosperity. Ecosystem services that enable prosperity would be declining, with carbon cycle feedbacks and fire causing forest losses. There is an urgent need for integrated assessments considering the synergy of impacts and limits to adaptation in multiple sectors and regions in a 4°C world. By contrast, a 2°C world is projected to experience about one-half of the climate change impacts, with concomitantly smaller challenges for adaptation. Ecosystem services, including the carbon sink provided by the Earth’s forests, would be expected to be largely preserved, with much less potential for interaction processes to increase challenges to adaptation. However, demands for land and water for biofuel cropping could reduce the availability of these resources for agricultural and natural systems. Hence, a whole system approach to mitigation and adaptation, considering interactions, potential human and species migration, allocation of land and water resources and ecosystem services, will be important in either a 2°C or a 4°C world.

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